Based on the flowers, this is not Aloidendron (Aloe) barberae but the more recently described A. tongaense. A. barberae racemes are tall, with pink flowers that open facing away from the stem; A. tongaense racemes are short and capitate, with orange flowers that point downward when open. The latter plant was known for a while as a form of barberae but was elevated to species status about a decade ago. I will be moving this image to the other entry.